// Copyright 2006, 2007 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry.internal.services;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import org.apache.tapestry.ioc.Location;
import org.apache.tapestry.runtime.Component;
import org.apache.tapestry.services.Environment;
import org.apache.tapestry.test.TapestryTestCase;
import org.testng.annotations.Test;
public class EnvironmentImplTest extends TapestryTestCase
{
@Test
public void peek_when_empty_returns_null()
{
Environment e = new EnvironmentImpl();
assertNull(e.peek(Runnable.class));
assertNull(e.peek(Map.class));
}
@Test
public void push_and_pop()
{
Environment e = new EnvironmentImpl();
Runnable r1 = mockRunnable();
Runnable r2 = mockRunnable();
replay();
assertNull(e.push(Runnable.class, r1));
assertSame(r1, e.peek(Runnable.class));
assertSame(r1, e.push(Runnable.class, r2));
assertSame(r2, e.peek(Runnable.class));
assertSame(r2, e.pop(Runnable.class));
assertSame(r1, e.pop(Runnable.class));
verify();
}
@Test
public void clear()
{
Environment e = new EnvironmentImpl();
Runnable r1 = mockRunnable();
Runnable r2 = mockRunnable();
replay();
e.push(Runnable.class, r1);
e.push(Runnable.class, r2);
e.clear();
assertNull(e.peek(Runnable.class));
verify();
}
@Test
public void pop_when_empty_is_error()
{
Environment e = new EnvironmentImpl();
try
{
e.pop(Runnable.class);
unreachable();
}
catch (NoSuchElementException ex)
{
}
}
@Test
public void peek_required_when_available()
{
Environment e = new EnvironmentImpl();
Location l = mockLocation();
replay();
e.push(Location.class, l);
assertSame(l, e.peekRequired(Location.class));
verify();
}
@Test
public void peek_required_without_value_is_error()
{
Environment e = new EnvironmentImpl();
Location l = mockLocation();
Component c = mockComponent();
replay();
e.push(Location.class, l);
e.push(Component.class, c);
try
{
e.peekRequired(List.class);
unreachable();
}
catch (RuntimeException ex)
{
assertEquals(
ex.getMessage(),
"No object of type java.util.List is available from the Environment. Available types are org.apache.tapestry.ioc.Location, org.apache.tapestry.runtime.Component.");
}
verify();
}
}